1898, Charlotte Porter and Helen A. Clarke, Introduction to The Complete Works of Robert Browning, New York: Thomas Y. Crowell, Volume 3, p. xix, This tremendous scene […] is, in some respects of stage action, a counterpart of the awful scene between Lady Macbeth and the Thane of Cawdor after Duncan’s murder. Yet how thoroughly and unimitatively is it reconstructed on opposite lines by the most original English pupil of the great Elizabethan wizard!
Source: wiktionary